php web系统多域名登录失败解决方法

下面只是简单的逻辑结构，对于正式的系统需要做具体的处理。

这里需要注意的是：加解密一定需要做安全验证。但是这个方法也不够完美，两个站点必须有相同一级域名；另外这种完全基于cookie的方式，安全性不够高

function login（）
{
    $info = callloginserver();  //访问登录服务器
    if（!empty($info)）    //登录成功了
}

//用户没有登录，则在本系统中登录并调用登录服务器接口

function login()    //正常的登录
{
    .......//验证用户的合法性
   $_session['uid'] = $user_id;
   setcookie('sign', encrypt($pass9), '', '/', 'the.com');
}
先检查用户是否在登录系统中登录
funtion sign()
{
  $sign = $_cookie['sign'];
  if(!empty($sign))
  {
     $sign = decrypt($sign);
    ..........///登录成功
  }
}

用户没有登录，则在本系统中登录并调用登录服务器接口

function loging()  //本系统登录
{
  .....//登录成功
  callseverlogin();//通知用户登录

}

所有的站点共享一个登录系统；当用户在其中的一个站点登录成功时， 该系统调用其他站点的登录接口，完成用户在其他站点的登录，同时设置相应的登录信息；或者在用户登录时，只在该系统保存用户登录信息，当用户在其他站点登录时，必须请求该系统接口，获取用户是否登录的信息。前一种方式的缺点是：不管用户有没有使用其他站点，那些站点都需要保存用户状态；后一种方式就把所有的压力都转移到登录系统上面来。而如果要实现用户退出的统一操作，就需要站点调用登录系统的退出接口，然后登录系统接口调用其他站点的退出接口；或者设置一个标记，如果这个标记不存在则标示用户退出，此时只要把该标示清空即可，其他站点发现该标示不存在就知道用户已经退出系统。

这种处理方式需要在登录系统和个站点之间规定登录接口，和注销接口。通过这些接口，个站点可以很方便的处理用户登录或退出：

从当前文件夹添加全部 *.hlp 文件到压缩文件 help.rar 中

winrar a help *.hlp

从文件添加注释可以使用 -z<文件> 开关。
winrar c -zinfo.txt dummy

这样,我们就可以通过php教程调用cmd,运行上述两个winrar参数来做到批量修改rar文件的注释及添加压缩包的文件.需要注意的是,php在安全模式打开的情况下是不能直接调用cmd的.

下面的代码就是我通过我的数据库教程读取出文件路径并最终实现批量修改rar文件注释的方法.因为数据库是access,我新建了一个odbc源.同时rar.exe及cmd.exe都在1.php同目录下

<?
$id=$_get[id];
if($id==”")
{
echo “参数错误”;
exit;
}
if($id>=400)
{
echo “全部结束”;
exit;
}
$db=odbc_connect(”dw”,”",”");
$sql=”select * from `download` where `id`=$id”;
$query=odbc_exec($db,$sql);
$filename=odbc_result($query,2);
if($filename==”")
{

}
$filename=str_replace(”#1′,”",$filename);
$filename=str_replace(”#2′,”",$filename);
$filename=”soft/”.$filename;
echo $filename.”<br>”;
        if(!file_exists($filename))
        {
        echo “文件不存在,转到下一个id”;
        $id++;
        echo “<meta http-equiv=’refresh’

content=’0;url=../test/1.php?id=$id’>”;     
        exit;
        }//读出文件名,并检查文件是否存在
else
{
`winrar a $filename 使用说明.txt`;
echo “插入说明文件成功”;
$id++;
echo “<meta http-equiv=’refresh’ content=’0;url=../test/1.php?id=$id’>”;
}
odbc_close($db);
?>

 
 

××××××××××××××××××××
最近采集流行,可能许多朋友都尝试通过采集数据来建设一个内容丰富完善的站点.
可是,在某些时候我们通常采集得到的rar文件都被批量加了注释,这个时候如果将这些数据放到自己的站上无异于为人家做广告.
最近我也碰到了这样的问题,为此大伤脑筋,后来仔细的翻看winrar的帮助文件发现我们可以通过下面的方法来做到批量修改.
我们打开winrar的帮助文件,帮助文件中提到了在命令行模式下修改rar文件注释及添加压缩文档的两个参数分别为ac,winrar的说明文件如下:
从当前文件夹添加全部 *.hlp 文件到压缩文件 help.rar 中
winrar a help *.hlp

从文件添加注释可以使用 -z<文件> 开关。
winrar c -zinfo.txt dummy

两款超php教程分页类代码

<?php
 /**
 * description:超强分页类，四种分页模式，默认采用类似baidu,google的分页风格。
 * 2.0增加功能：支持自定义风格，自定义样式，同时支持php4和php5,
 * example:
 * 模式四种分页模式：
 * require_once('../libs/classes/page.class.php');
 * $page=new page(array('total'=>1000,'perpage'=>20));
 * echo 'mode:1<br>'.$page->show();
 * echo '<hr>mode:2<br>'.$page->show(2);
 * echo '<hr>mode:3<br>'.$page->show(3);
 * echo '<hr>mode:4<br>'.$page->show(4);
 * 开启ajax：
 * $ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
 * echo 'mode:1<br>'.$ajaxpage->show();
 */
class page
{
 /**
  * config ,public
  */
 var $page_name="page";//page标签，用来控制url页。比如说xxx.php?page=2中的page
 var $next_page='>';//下一页
 var $pre_page='<';//上一页
 var $first_page='first';//首页
 var $last_page='last';//尾页
 var $pre_bar='<<';//上一分页条
 var $next_bar='>>';//下一分页条
 var $format_left='[';
 var $format_right=']';
 var $is_ajax=false;//是否支持ajax分页模式
 
 /**
  * private
  *
  */
 var $pagebarnum=10;//控制记录条的个数。
 var $totalpage=0;//总页数
 var $ajax_action_name='';//ajax动作名
 var $nowindex=1;//当前页
 var $url="";//url地址头
 var $offset=0;
 
 /**
  * constructor构造函数
  *
  * @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']
  */
 function page($array)
 {
  if(is_array($array)){
     if(!array_key_exists('total',$array))$this->error(__function__,'need a param of total');
     $total=intval($array['total']);
     $perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
     $nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
     $url=(array_key_exists('url',$array))?$array['url']:'';
  }else{
     $total=$array;
     $perpage=10;
     $nowindex='';
     $url='';
  }
  if((!is_int($total))||($total<0))$this->error(__function__,$total.' is not a positive integer!');
  if((!is_int($perpage))||($perpage<=0))$this->error(__function__,$perpage.' is not a positive integer!');
  if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename
  $this->_set_nowindex($nowindex);//设置当前页
  $this->_set_url($url);//设置链接地址
  $this->totalpage=ceil($total/$perpage);
  $this->offset=($this->nowindex-1)*$this->perpage;
  if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开ajax模式
 }
 /**
  * 设定类中指定变量名的值，如果改变量不属于这个类，将throw一个exception
  *
  * @param string $var
  * @param string $value
  */
 function set($var,$value)
 {
  if(in_array($var,get_object_vars($this)))
     $this->$var=$value;
  else {
   $this->error(__function__,$var." does not belong to pb_page!");
  }
 
}
 /**
  * 打开倒ajax模式
  *
  * @param string $action 默认ajax触发的动作。
  */
 function open_ajax($action)
 {
  $this->is_ajax=true;
  $this->ajax_action_name=$action;
 }
 /**
  * 获取显示"下一页"的代码
  *
  * @param string $style
  * @return string
  */
 function next_page($style='')
 {
  if($this->nowindex<$this->totalpage){
   return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
  }
  return '<span class=".$style.">'.$this->next_page.'</span>';
 }
 
/**
  * 获取显示“上一页”的代码
  *
  * @param string $style
  * @return string
  */
 function pre_page($style='')
 {
  if($this->nowindex>1){
   return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
  }
  return '<span class=".$style.">'.$this->pre_page.'</span>';
}

 /**
  * 获取显示“首页”的代码
  *
  * @return string
  */
 function first_page($style='')
 {
  if($this->nowindex==1){
    return '<span class=".$style.">'.$this->first_page.'</span>';
  }
  return $this->_get_link($this->_get_url(1),$this->first_page,$style);
 }

 /**
  * 获取显示“尾页”的代码
  *
  * @return string
  */
 function last_page($style='')
 {
  if($this->nowindex==$this->totalpage){
      return '<span class=".$style.">'.$this->last_page.'</span>';
  }
  return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
 }
 
 function nowbar($style='',$nowindex_style='')
 {
  $plus=ceil($this->pagebarnum/2);
  if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
  $begin=$this->nowindex-$plus+1;
  $begin=($begin>=1)?$begin:1;
  $return='';
  for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
  {
   if($i<=$this->totalpage){
    if($i!=$this->nowindex)
        $return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
    else
        $return.=$this->_get_text('<span class=".$nowindex_style.">'.$i.'</span>');
   }else{
    break;
   }
   $return.="n";
  }
  unset($begin);
  return $return;
 }
 /**
  * 获取显示跳转按钮的代码
  *
  * @return string
  */
 function select()
 {
  $return='<select name="pb_page_select" >';
  for($i=1;$i<=$this->totalpage;$i++)
  {
   if($i==$this->nowindex){
    $return.='<option value="'.$i.'" selected>'.$i.'</option>';
   }else{
    $return.='<option value="'.$i.'">'.$i.'</option>';
   }
  }
  unset($i);
  $return.='</select>';
  return $return;
 }
 
 /**
  * 获取mysql教程 语句中limit需要的值
  *
  * @return string
  */
 function offset()
 {
  return $this->offset;
 }
 
 /**
  * 控制分页显示风格（你可以增加相应的风格）
  *
  * @param int $mode
  * @return string
  */
 function show($mode=1)
 {
  switch ($mode)
  {
   case '1':
    $this->next_page='下一页';
    $this->pre_page='上一页';
    return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
    break;
   case '2':
    $this->next_page='下一页';
    $this->pre_page='上一页';
    $this->first_page='首页';
    $this->last_page='尾页';
    return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
    break;
   case '3':
    $this->next_page='下一页';
    $this->pre_page='上一页';
    $this->first_page='首页';
    $this->last_page='尾页';
    return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
    break;
   case '4':
    $this->next_page='下一页';
    $this->pre_page='上一页';
    return $this->pre_page().$this->nowbar().$this->next_page();
    break;
   case '5':
    return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
    break;
  }
 
 }
/*----------------private function (私有方法)-----------------------------------------------------------*/
 /**
  * 设置url头地址
  * @param: string $url
  * @return boolean
  */
 function _set_url($url="")
 {
  if(!empty($url)){
      //手动设置
   $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
  }else{
      //自动获取
   if(empty($_server['query_string'])){
       //不存在query_string时
    $this->url=$_server['request_uri']."?".$this->page_name."=";
   }else{
       //
    if(stristr($_server['query_string'],$this->page_name.'=')){
        //地址存在页面参数
     $this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_server['request_uri']);
     $last=$this->url[strlen($this->url)-1];
     if($last=='?'||$last=='&'){
         $this->url.=$this->page_name."=";
     }else{
         $this->url.='&'.$this->page_name."=";
     }
    }else{
        //
     $this->url=$_server['request_uri'].'&'.$this->page_name.'=';
    }//end if   
   }//end if
  }//end if
 }
 
 /**
  * 设置当前页面
  *
  */
 function _set_nowindex($nowindex)
 {
  if(empty($nowindex)){
   //系统获取
  
   if(isset($_get[$this->page_name])){
    $this->nowindex=intval($_get[$this->page_name]);
   }
  }else{
      //手动设置
   $this->nowindex=intval($nowindex);
  }
 }
 
 /**
  * 为指定的页面返回地址值
  *
  * @param int $pageno
  * @return string $url
  */
 function _get_url($pageno=1)
 {
  return $this->url.$pageno;
 }
 
 /**
  * 获取分页显示文字，比如说默认情况下_get_text('<a href="">1</a>')将返回[<a href="">1</a>]
  *
  * @param string $str
  * @return string $url
  */
 function _get_text($str)
 {
  return $this->format_left.$str.$this->format_right;
 }
 
 /**
   * 获取链接地址
 */
 function _get_link($url,$text,$style=''){
  $style=(empty($style))?'':'class="'.$style.'"';
  if($this->is_ajax){
      //如果是使用ajax模式
   return '<a '.$style.' href="网页特效:'.$this->ajax_action_name.'(''.$url.'')">'.$text.'</a>';
  }else{
   return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
  }
 }
 /**
   * 出错处理方式
 */
 function error($function,$errormsg)
 {
     die('error in file <b>'.__file__.'</b> ,function <b>'.$function.'()</b> :'.$errormsg);
 }
}
?>

代码二

/**
   * 获取页码导航html
   * @param $pagenum：当前页码
   * @param $pagesize：每页数量
   * @param $rowcount：记录总数
   * @param $navurl：链接页面url
   */
 function getnavhtml($pagenum,$pagesize,$rowcount,$navurl){
  $pagecount = (int)($rowcount/$pagesize); //总页数
  if ($rowcount % $pagesize >0){
   $pagecount++;
  }
  if ($pagenum>$pagecount){
   $pagenum = 1;
  }
  $firstnav = "<a href="{$navurl}page=1">首页</a> ";
  $lastnav = "<a href="{$navurl}page={$pagecount}">尾页</a> ";
  $prevnav="";
  $nextnav="";
  if ($pagenum>1){
   $navpagenum = $pagenum-1;
   $prevnav = "<a href="{$navurl}page={$navpagenum}">上一页</a> ";
  }
  if ($pagenum<$pagecount && $pagecount>1){
   $navpagenum = $pagenum+1;
   $nextnav = "<a href="{$navurl}page={$navpagenum}">下一页</a> ";
  }
  $amongnav="";

//关键循环

  for ($i=1;$i<=5;$i++){
   $navpagenum = $pagenum+ $i-3;
   if ($navpagenum>0 && $navpagenum<=$pagecount){
    $navcss教程 = $navpagenum == $pagenum?" class="hover"":"";
    $amongnav.="<a href="{$navurl}page={$navpagenum}" $navcss>{$navpagenum}</a> ";
   }
  }
  return $firstnav.$prevnav.$amongnav.$nextnav.$lastnav." ".$pagenum."/".$pagecount." 共有[".$rowcount."]条数据";
 }
}

php教程 配置中的 upload_tmp_dir 这个参数进行比较，如果文件在这个目录下面，那么 move_uploaded_file 才会进行移动操作。而且这个比较是大小写敏感，/ 在windows 下面也是不一样的。而在php配置文件解析的时候，会调用一个realpath 函数，也就是是说，你在move_uploaded_file 之前，

必须对$file['tmp_name'] = realpath($file['tmp_name']); realpath 一下。

    还有一种情况，大家要注意，就是 move_uploaded_file  如果配置成一个无法访问的路径，那么你不管怎么处理，move_uploaded_file 总是不能成功移动文件。

在文件上传的时候，用 move_uploaded_file 这个函数不能移动文件，而用copy 或者 rename 确是可以的。

我也一直很困惑。在文档上，说的比较模糊，就是 move_uploaded_file 这个函数，加了一步检查，检查这个文件是否是有 http post 上传的，

下面我在网上找到一个文件上传类

**文件上传类**/
 
 

class upload_file
 {
  /**声明**/
  var $upfile_type,$upfile_size,$upfile_name,$upfile;
  var $d_alt,$extention_list,$tmp,$arri;
  var $datetime,$date;
  var $filestr,$size,$ext,$check;
  var $flash_directory,$extention,$file_path,$base_directory;
  var $url; //文件上传成功后跳转路径;
 
  function upload_file()
  {
   /**构造函数**/
   $this->set_url("index.php");          //初始化上传成功后跳转路径;
   $this->set_extention();             //初始化扩展名列表;
   $this->set_size(50);              //初始化上传文件kb限制;
   $this->set_date();               //设置目录名称;
   $this->set_datetime();             //设置文件名称前缀;
   $this->set_base_directory("attachmentfile");  //初始化文件上传根目录名，可修改！;
  }
 
  /**文件类型**/
  function set_file_type($upfile_type)
  {
   $this->upfile_type = $upfile_type;       //取得文件类型;
  }
 
  /**获得文件名**/
  function set_file_name($upfile_name)
  {
   $this->upfile_name = $upfile_name;       //取得文件名称;
  }
 
  /**获得文件**/
  function set_upfile($upfile)
  {
   $this->upfile = $upfile;            //取得文件在服务端储存的临时文件名;
  }
   
  /**获得文件大小**/
  function set_file_size($upfile_size)
  {
   $this->upfile_size = $upfile_size;       //取得文件尺寸;
  }
 
  /**设置文件上传成功后跳转路径**/
  function set_url($url)
  {
   $this->url = $url;               //设置成功上传文件后的跳转路径;
  }
 
  /**获得文件扩展名**/
  function get_extention()
  {
    $this->extention = preg_replace('/.*.(.*[^.].*)*/iu','1',$this->upfile_name); //取得文件扩展名;
  }
     
  /**设置文件名称**/
  function set_datetime()
  {
   $this->datetime = date("ymdhis");        //按时间生成文件名;
  }
 
  /**设置目录名称**/
  function set_date()
  {
   $this->date = date("y-m-d");          //按日期生成目录名称;
  }
 
  /**初始化允许上传文件类型**/
  function set_extention()
  {
   $this->extention_list = "doc|xls|ppt|avi|txt|gif|jpg|jpeg|bmp|png"; //默认允许上传的扩展名称;
  } 
 
  /**设置最大上传kb限制**/
  function set_size($size)
  {
   $this->size = $size;              //设置最大允许上传的文件大小;
  }
 
  /**初始化文件存储根目录**/
  function set_base_directory($directory)
  {
   $this->base_directory = $directory; //生成文件存储根目录;
  }
 
  /**初始化文件存储子目录**/
  function set_flash_directory()
  {
   $this->flash_directory = $this->base_directory."/".$this->date; //生成文件存储子目录;
  }
 
  /**错误处理**/
  function showerror($errstr="未知错误！"){
   echo "<script language=网页特效>alert('$errstr');location='javascript:history.go(-1);';</script>";
   exit();
  }
 
  /**跳转**/
  function go_to($str,$url)
  {
   echo "<script language='javascript'>alert('$str');location='$url';</script>";
   exit();
  }

  /**如果根目录没有创建则创建文件存储目录**/
  function mk_base_dir()
  {
   if (! file_exists($this->base_directory)){   //检测根目录是否存在;
    @mkdir($this->base_directory,0777);     //不存在则创建;
   }
  }

  /**如果子目录没有创建则创建文件存储目录**/
  function mk_dir()
  {
   if (! file_exists($this->flash_directory)){   //检测子目录是否存在;
    @mkdir($this->flash_directory,0777);     //不存在则创建;
   }
  } 
 
  /**以数组的形式获得分解后的允许上传的文件类型**/
  function get_compare_extention()
  {
   $this->ext = explode("|",$this->extention_list);//以"|"来分解默认扩展名;
  }
 
  /**检测扩展名是否违规**/
  function check_extention()
  {
   for($i=0;each($this->ext);$i++)            //遍历数组;
   {
    if($this->ext[$i] == strtolower($this->extention)) //比较文件扩展名是否与默认允许的扩展名相符;
    {
     $this->check = true;               //相符则标记;
     break;
    }
   }
   if(!$this->check){$this->showerror("正确的扩展名必须为".$this->extention_list."其中的一种！");}
   //不符则警告
  }
 
  /**检测文件大小是否超标**/
  function check_size()
  {
   if($this->upfile_size > round($this->size*1024))     //文件的大小是否超过了默认的尺寸;
   {
    $this->showerror("上传附件不得超过".$this->size."kb"); //超过则警告;
   }
  }

  /**文件完整访问路径**/
  function set_file_path()
  {
   $this->file_path = $this->flash_directory."/".$this->datetime.".".$this->extention; //生成文件完整访问路径;
  }
 
  /**上传文件**/
  function copy_file()
  {
   if(copy($this->upfile,$this->file_path)){        //上传文件;
    print $this->go_to("文件已经成功上传！",$this->url);  //上传成功;
   }else {
    print $this->showerror("意外错误，请重试！");     //上传失败;
   }
  }
 
  /**完成保存**/
  function save()
  {
   $this->set_flash_directory();  //初始化文件上传子目录名;
   $this->get_extention();     //获得文件扩展名;
   $this->get_compare_extention(); //以"|"来分解默认扩展名;
   $this->check_extention();    //检测文件扩展名是否违规;
   $this->check_size();      //检测文件大小是否超限;  
   $this->mk_base_dir();      //如果根目录不存在则创建；
   $this->mk_dir();        //如果子目录不存在则创建;
   $this->set_file_path();     //生成文件完整访问路径;
   $this->copy_file();       //上传文件;
  }
 
 }

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>ajax php教程多文件上传代码</title>
<script>
(function(){
 
var d = document, w = window;

/**
 * get element by id
 */ 
function get(element){
 if (typeof element == "string")
  element = d.getelementbyid(element);
 return element;
}

/**
 * attaches event to a dom element
 */
function addevent(el, type, fn){
 if (w.addeventlistener){
  el.addeventlistener(type, fn, false);
 } else if (w.attachevent){
  var f = function(){
    fn.call(el, w.event);
  };   
  el.attachevent('on' + type, f)
 }
}

/**
 * creates and returns element from html chunk
 */
var toelement = function(){
 var div = d.createelement('div');
 return function(html){
  div.innerhtml = html;
  var el = div.childnodes[0];
  div.removechild(el);
  return el;
 }
}();

function hasclass(ele,cls){
 return ele.classname.match(new regexp('(s|^)'+cls+'(s|$)'));
}
function addclass(ele,cls) {
 if (!hasclass(ele,cls)) ele.classname += " "+cls;
}
function removeclass(ele,cls) {
 var reg = new regexp('(s|^)'+cls+'(s|$)');
 ele.classname=ele.classname.replace(reg,' ');
}

// getoffset function copied from jquery lib (http://jquery.com/)
if (document.documentelement["getboundingclientrect"]){
 // get offset using getboundingclientrect
 // http://ejohn.org/blog/getboundingclientrect-is-awesome/
 var getoffset = function(el){
  var box = el.getboundingclientrect(),
  doc = el.ownerdocument,
  body = doc.body,
  docelem = doc.documentelement,
  
  // for ie
  clienttop = docelem.clienttop || body.clienttop || 0,
  clientleft = docelem.clientleft || body.clientleft || 0,
  
  // in internet explorer 7 getboundingclientrect property is treated as physical,
  // while others are logical. make all logical, like in ie8.  
  
  zoom = 1;
  
  if (body.getboundingclientrect) {
   var bound = body.getboundingclientrect();
   zoom = (bound.right - bound.left)/body.clientwidth;
  }
  
  if (zoom > 1){
   clienttop = 0;
   clientleft = 0;
  }
  
  var top = box.top/zoom + (window.pageyoffset || docelem && docelem.scrolltop/zoom || body.scrolltop/zoom) - clienttop,
  left = box.left/zoom + (window.pagexoffset|| docelem && docelem.scrollleft/zoom || body.scrollleft/zoom) - clientleft;
    
  return {
   top: top,
   left: left
  };
 }
 
} else {
 // get offset adding all offsets
 var getoffset = function(el){
  if (w.jquery){
   return jquery(el).offset();
  }  
   
  var top = 0, left = 0;
  do {
   top += el.offsettop || 0;
   left += el.offsetleft || 0;
  }
  while (el = el.offsetparent);
  
  return {
   left: left,
   top: top
  };
 }
}

function getbox(el){
 var left, right, top, bottom; 
 var offset = getoffset(el);
 left = offset.left;
 top = offset.top;
      
 right = left + el.offsetwidth;
 bottom = top + el.offsetheight;  
  
 return {
  left: left,
  right: right,
  top: top,
  bottom: bottom
 };
}

/**
 * crossbrowser mouse coordinates
 */
function getmousecoords(e){  
 // pagex/y is not supported in ie
 // http://www.quirksmode.org/dom/w3c_css教程om.html   
 if (!e.pagex && e.clientx){
  // in internet explorer 7 some properties (mouse coordinates) are treated as physical,
  // while others are logical (offset).
  var zoom = 1; 
  var body = document.body;
  
  if (body.getboundingclientrect) {
   var bound = body.getboundingclientrect();
   zoom = (bound.right - bound.left)/body.clientwidth;
  }

  return {
   x: e.clientx / zoom + d.body.scrollleft + d.documentelement.scrollleft,
   y: e.clienty / zoom + d.body.scrolltop + d.documentelement.scrolltop
  };
 }
 
 return {
  x: e.pagex,
  y: e.pagey
 };  

}
/**
 * function generates unique id
 */  
var getuid = function(){
 var id = 0;
 return function(){
  return 'valumsajaxupload' + id++;
 }
}();

function filefrompath(file){
 return file.replace(/.*(/|)/, "");   
}

function getext(file){
 return (/[.]/.exec(file)) ? /[^.]+$/.exec(file.tolowercase()) : '';
}   

/**
 * cross-browser way to get xhr object 
 */
var getxhr = function(){
 var xhr;
 
 return function(){
  if (xhr) return xhr;
    
  if (typeof xmlhttprequest !== 'undefined') {
   xhr = new xmlhttprequest();
  } else {
   var v = [
    "microsoft.xmlhttp",
    "msxml2.xmlhttp.5.0",
    "msxml2.xmlhttp.4.0",
    "msxml2.xmlhttp.3.0",
    "msxml2.xmlhttp.2.0"     
   ];
   
   for (var i=0; i < v.length; i++){
    try {
     xhr = new activexobject(v[i]);
     break;
    } catch (e){}
   }
  }    

  return xhr;
 }
}();

// please use ajaxupload , ajax_upload will be removed in the next version
ajax_upload = ajaxupload = function(button, options){
 if (button.jquery){
  // jquery object was passed
  button = button[0];
 } else if (typeof button == "string" && /^#.*/.test(button)){     
  button = button.slice(1);    
 }
 button = get(button); 
 
 this._input = null;
 this._button = button;
 this._disabled = false;
 this._submitting = false;
 // variable changes to true if the button was clicked
 // 3 seconds ago (requred to fix safari on mac error)
 this._justclicked = false;
 this._parentdialog = d.body;
  
 if (window.jquery && jquery.ui && jquery.ui.dialog){
  var parentdialog = jquery(this._button).parents('.ui-dialog');
  if (parentdialog.length){
   this._parentdialog = parentdialog[0];
  }
 }   
     
 this._settings = {
  // location of the server-side upload script
  action: 'upload.php',   
  // file upload name
  name: 'userfile',
  // additional data to send
  data: {},
  // submit file as soon as it's selected
  autosubmit: true,
  // the type of data that you're expecting back from the server.
  // html and xml are detected automatically.
  // only useful when you are using json data as a response.
  // set to "json" in that case.
  responsetype: false,
  // location of the server-side script that fixes safari
  // hanging problem returning "connection: close" header
  closeconnection: '',
  // class applied to button when mouse is hovered
  hoverclass: 'hover',  
  // when user selects a file, useful with autosubmit disabled   
  onchange: function(file, extension){},     
  // callback to fire before file is uploaded
  // you can return false to cancel upload
  onsubmit: function(file, extension){},
  // fired when file upload is completed
  // warning! do not use "false" string as a response!
  oncomplete: function(file, response) {}
 };

 // merge the users options with our defaults
 for (var i in options) {
  this._settings[i] = options[i];
 }
 
 this._createinput();
 this._rerouteclicks();
}
   
// assigning methods to our class
ajaxupload.prototype = {
 setdata : function(data){
  this._settings.data = data;
 },
 disable : function(){
  this._disabled = true;
 },
 enable : function(){
  this._disabled = false;
 },
 // removes instance
 destroy : function(){
  if(this._input){
   if(this._input.parentnode){
    this._input.parentnode.removechild(this._input);
   }
   this._input = null;
  }
 },    
 /**
  * creates invisible file input above the button
  */
 _createinput : function(){
  var self = this;
  var input = d.createelement("input");
  input.setattribute('type', 'file');
  input.setattribute('name', this._settings.name);
  var styles = {
   'position' : 'absolute'
   ,'margin': '-5px 0 0 -175px'
   ,'padding': 0
   ,'width': '220px'
   ,'height': '30px'
   ,'fontsize': '14px'        
   ,'opacity': 0
   ,'cursor': 'pointer'
   ,'display' : 'none'
   ,'zindex' :  2147483583 //max zindex supported by opera 9.0-9.2x
   // strange, i expected 2147483647
   // doesn't work in ie :(
   //,'direction' : 'ltr'   
  };
  for (var i in styles){
   input.style[i] = styles[i];
  }
  
  // make sure that element opacity exists
  // (ie uses filter instead)
  if ( ! (input.style.opacity === "0")){
   input.style.filter = "alpha(opacity=0)";
  }
       
  this._parentdialog.appendchild(input);

  addevent(input, 'change', function(){
   // get filename from input
   var file = filefrompath(this.value); 
   if(self._settings.onchange.call(self, file, getext(file)) == false ){
    return;    
   }              
   // submit form when value is changed
   if (self._settings.autosubmit){
    self.submit();      
   }      
  });
  
  // fixing problem with safari
  // the problem is that if you leave input before the file select dialog opens
  // it does not upload the file.
  // as dialog opens slowly (it is a sheet dialog which takes some time to open)
  // there is some time while you can leave the button.
  // so we should not change display to none immediately
  addevent(input, 'click', function(){
   self.justclicked = true;
   settimeout(function(){
    // we will wait 3 seconds for dialog to open
    self.justclicked = false;
   }, 2500);   
  });  
  
  this._input = input;
 },
 _rerouteclicks : function (){
  var self = this;
 
  // ie displays 'access denied' error when using this method
  // other browsers just ignore click()
  // addevent(this._button, 'click', function(e){
  //   self._input.click();
  // });
    
  var box, dialogoffset = {top:0, left:0}, over = false;
         
  addevent(self._button, 'mouseo教程ver', function(e){
   if (!self._input || over) return;
   
   over = true;
   box = getbox(self._button);
     
   if (self._parentdialog != d.body){
    dialogoffset = getoffset(self._parentdialog);
   } 
  });
  
 
  // we can't use mouseout on the button,
  // because invisible input is over it
  addevent(document, 'mousemove', function(e){
   var input = self._input;   
   if (!input || !over) return;
   
   if (self._disabled){
    removeclass(self._button, self._settings.hoverclass);
    input.style.display = 'none';
    return;
   } 
          
   var c = getmousecoords(e);

   if ((c.x >= box.left) && (c.x <= box.right) &&
   (c.y >= box.top) && (c.y <= box.bottom)){
       
    input.style.top = c.y - dialogoffset.top + 'px';
    input.style.left = c.x - dialogoffset.left + 'px';
    input.style.display = 'block';
    addclass(self._button, self._settings.hoverclass);
        
   } else {  
    // mouse left the button
    over = false;
   
    var check = setinterval(function(){
     // if input was just clicked do not hide it
     // to prevent safari bug
     
     if (self.justclicked){
      return;
     }
     
     if ( !over ){
      input.style.display = 'none'; 
     }      
    
     clearinterval(check);
    
    }, 25);
     

    removeclass(self._button, self._settings.hoverclass);
   }   
  });   
   
 },
 /**
  * creates iframe with unique name
  */
 _createiframe : function(){
  // unique name
  // we cannot use gettime, because it sometimes return
  // same value in safari :(
  var id = getuid();
  
  // remove ie6 "this page contains both secure and nonsecure items" prompt
  // http://tinyurl.com/77w9wh
  var iframe = toelement('<iframe src="网页特效:false;" name="' + id + '" />');
  iframe.id = id;
  iframe.style.display = 'none';
  d.body.appendchild(iframe);   
  return iframe;      
 },
 /**
  * upload file without refreshing the page
  */
 submit : function(){
  var self = this, settings = this._settings; 
     
  if (this._input.value === ''){
   // there is no file
   return;
  }
          
  // get filename from input
  var file = filefrompath(this._input.value);   

  // execute user event
  if (! (settings.onsubmit.call(this, file, getext(file)) == false)) {
   // create new iframe for this submission
   var iframe = this._createiframe();
   
   // do not submit if user function returns false          
   var form = this._createform(iframe);
   form.appendchild(this._input);

   // a pretty little hack to make uploads not hang in safari. just call this
   // immediately before the upload is submitted. this does an ajax call to
   // the server, which returns an empty document with the "connection: close"
   // header, telling safari to close the active connection.
   // http://blog.airbladesoftware.com/2007/8/17/note-to-self-prevent-uploads-hanging-in-safari
   if (settings.closeconnection && /applewebkit|msie/.test(navigator.useragent)){
    var xhr = getxhr();
    // open synhronous connection
    xhr.open('get', settings.closeconnection, false);
    xhr.send('');
   }
   
   form.submit();
   
   d.body.removechild(form);    
   form = null;
   this._input = null;
   
   // create new input
   this._createinput();
   
   var todeleteflag = false;
   
   addevent(iframe, 'load', function(e){
     
    if (// for safari
     iframe.src == "javascript:'%3chtml%3e%3c/html%3e';" ||
     // for ff, ie
     iframe.src == "javascript:'<html></html>';"){      
     
     // first time around, do not delete.
     if( todeleteflag ){
      // fix busy state in ff3
      settimeout( function() {
       d.body.removechild(iframe);
      }, 0);
     }
     return;
    }    
    
    var doc = iframe.contentdocument ? iframe.contentdocument : frames[iframe.id].document;

    // fixing opera 9.26
    if (doc.readystate && doc.readystate != 'complete'){
     // opera fires load event multiple times
     // even when the dom is not ready yet
     // this fix should not affect other browsers
     return;
    }
    
    // fixing opera 9.64
    if (doc.body && doc.body.innerhtml == "false"){
     // in opera 9.64 event was fired second time
     // when body.innerhtml changed from false
     // to server response approx. after 1 sec
     return;    
    }
    
    var response;
         
    if (doc.xmldocument){
     // response is a xml document ie property
     response = doc.xmldocument;
    } else if (doc.body){
     // response is html document or plain text
     response = doc.body.innerhtml;
     if (settings.responsetype && settings.responsetype.tolowercase() == 'json'){
      // if the document was sent as 'application/javascript' or
      // 'text/javascript', then the browser wraps教程 the text in a <pre>
      // tag and performs html encoding on the contents.  in this case,
      // we need to pull the original text content from the text node's
      // nodevalue property to retrieve the unmangled content.
      // note that ie6 only understands text/html
      if (doc.body.firstchild && doc.body.firstchild.nodename.touppercase() == 'pre'){
       response = doc.body.firstchild.firstchild.nodevalue;
      }
      if (response) {
       response = window["eval"]("(" + response + ")");
      } else {
       response = {};
      }
     }
    } else {
     // response is a xml document
     var response = doc;
    }
                   
    settings.oncomplete.call(self, file, response);
      
    // reload blank page, so that reloading main page
    // does not re-submit the post. also, remember to
    // delete the frame
    todeleteflag = true;
    
    // fix ie mixed content issue
    iframe.src = "javascript:'<html></html>';";           
   });
 
  } else {
   // clear input to allow user to select same file
   // doesn't work in ie6
   // this._input.value = '';
   d.body.removechild(this._input);    
   this._input = null;
   
   // create new input
   this._createinput();      
  }
 },  
 /**
  * creates form, that will be submitted to iframe
  */
 _createform : function(iframe){
  var settings = this._settings;
  
  // method, enctype must be specified here
  // because changing this attr on the fly is not allowed in ie 6/7  
  var form = toelement('<form method="post" enctype="multipart/form-data"></form>');
  form.style.display = 'none';
  form.action = settings.action;
  form.target = iframe.name;
  d.body.appendchild(form);
  
  // create hidden input element for each data key
  for (var prop in settings.data){
   var el = d.createelement("input");
   el.type = 'hidden';
   el.name = prop;
   el.value = settings.data[prop];
   form.appendchild(el);
  }   
  return form;
 } 
};
})();
</script>
</head>

<body>
<p id="errorremind"></p>
<input id="unloadpic" type="button" value="上传图片" />
<ol id="uploadedname"></ol>

<script type="text/javascript" src="../js/ajaxupload.js"></script>
<script type="text/javascript">
window.onload = function(){
 var obtn = document.getelementbyid("unloadpic");
 var oshow = document.getelementbyid("uploadedname");
 var oremind = document.getelementbyid("errorremind"); 
 new ajaxupload(obtn,{
  action:"file_upload.php",
  name:"upload",
  onsubmit:function(file,ext){
   if(ext && /^(jpg|jpeg|png|gif)$/.test(ext)){
    //ext是后缀名
    obtn.value = "正在上传…";
    obtn.disabled = "disabled";
   }else{ 
    oremind.style.color = "#ff3300";
    oremind.innerhtml = "不支持非图片格式！";
    return false;
   }
  },
  oncomplete:function(file,response){
   obtn.disabled = "";
   obtn.value = "再上传一张图片";
   oremind.innerhtml = "";
   var newchild =  document.createelement("li");
   newchild.innerhtml = file;
   oshow.appendchild(newchild);
  }
 });
};
</script>
</body>
</html>

<?php #file_upload.php 2009-11-06
 $file_path = '../../../uploads/';
 $file_up = $file_path.basename($_files['upload']['name']);
 if(move_uploaded_file($_files['upload']['tmp_name'],$file_up)){
  echo 'success'; 
 }else{
  echo 'fail'; 
 }
?>